The Flandreau Santee Sioux Tribe is comprised primarily of descendents of "Mdewakantonwan", a member of the Isanti division of the Great Sioux Nation, and refer to themselves as Dakota, which means friend or ally. The Flandreau Santee Sioux Indian Reservation is 5,000 acres of combined trust and fee tribal land located along and near the Big Sioux River in Moody County, South Dakota, in a region know as the Prairie Coteau, which consists primarily of undulating or gently rolling land.